Composite sheet or layer.



No. 841,294. PATENTED JAN. 15, 1907.

W. W. WHITGOMB. COMPOSITE SHEET OR LAYER.

APPLICATION FILED OCT. 10,1906.

1762522 GJJJ. I22 palatal Y of this specification.

UNITED STATES PA TENT o en,

' WILLIAM W. wmrcoMaoF BROOKLINE, MASSACHUSETTS.

' ,oo'MPosITE SHEET OR LAYER.

No. 841,294. I

Specification of Letters Patent.

Patented Jan. 15, 1907.

To all whom it may concern:

Be it known that 1, WILLIAM W. WHIT- COMB, a citizen of the United States, residing in Brookline, in the county of Norfolk and State of Massachusetts, have invented an Improvement in Composite Sheets or Layers, of which thefollowing description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts. 1

This invention has for its object to provide -a"flexible composite sheet, layer, or strip designed and adapted for a large variety of uses in which friction is required such, for instance, as belts, coverings, or facings of pulleys, clutches, &c.

The present invention has for its object to provide a flexible 'body which is fibrous in whole or in part, with inserts .of non-metallic material, preferably cork in its natural state, which form frictio1'1-surfaces with which increased gripping or holding effect may be obtained.-

The flexible body referred to is made in the form of a sheet, layer, or strip of leather, rubber, and cloth or other suitable flexible material which is fibrous in whole or in part, and is provided'with a plurality of sockets into which are fitted inserts, preferably of cork. The flexible sheet, layer, or strip may be cut into any desired shape .to adapt it to the particular use desired, and the desired friction is obtained by means of the cork or other non-metallic inserts.

The particular features of this invention will be-pointed out in the claims at the end Figure 1 represents a pulleyprovided with a facing embodying this invention; Fig. 2, a

plan view of a portion of a composite sheet or strip of which the covering or facing shown in Fig. 1 is made and Fig. 3, a section of the composite sheet or strip shown in Flg. 2, taken on the line 3 3.

The body portion of the flexible composite sheet or strip may be made of layers a of fibrous material-such as cloth, canvas, and

the lilre cemented together by layers Z: of rubber, or said body portion may be made of leather or other flexible fibrous material or materials.

The flexible body portion referred to is provided with a plurality of sockets or 0 eningls into which are fitted inserts c of cor or ot er non-metallic material by means of which the desired friction may be obtained,

portion of the composite sheet,

so as to enable the flexible body portion to of wayssuch,- for instance, as belts, facings, or coverings for pulleys d or clutches, either cone, disk, or of other shape or construction. The cork inserts 0 may be forced into their sockets or openings and retained therein by the expansion of the corks, or they may be made tapering to fit corres onding y-shaped sockets or openings, whic lattermay extend through the flexible bod portion and be larger at the back or rear si e of the same, in which case the inserts may be retained in their sockets by a flexible backing e, of cloth, leather, or other fibrous material.

en the composite flexible sheet orlayer is used as a facin or covering for pulleys,

cured in place by rivets or other fasteningsf, inserted through suitable holes in the body l a er, or strip, or it may be otherwise fastened.

The flexible composite sheet or strip ma be made of sufficient length and breadth to be used as a belt, in which case increased frictional contact of the belt with a plain wooden or metal pulle may be obtained, owing to the non-metal ic inserts.

The flexible composite sheet or strip ma also be used as a facing or covering forp leys after the manner re resented in Fig. 1 and used with a plain be t of ordinary construction, with the advantage of obtaining increased gripping effect between the pulley and its belt. The same is true when the flexible composite sheet is used as a facing or covering for cone or disk clutches.

It will be seen that the flexible body portion-may be made of any desired length and width and may also be cut to readily fit any desired sha e of article and have, imparted to it increase gripping eflect by means of the non-metallic inserts.

It will thus be seen that the flexible comosite sheet, strip, or piece thus made may be 'e t as a stock, article ready to be a plied to pu eys, clutches, and the like alrea y in use when it is desired to increase the gripping eifect of the same.

Furthermore, said com osite sheets or stri s may be made of any wi th and kept in stock.

I claim v 1. As an improved article of manufacture,

esired length and a flexible composite sheet orstrip composed in part providedv with sockets orlopening s, L and a plurality of inserts of non-metallic mamm of fibrous ayers Cemented together and aving holes or openings, and inserts of terial extended into said sockets or openings, substantially-as described.

'2; As animproyed article of manufacture a flem'ble composite sheet or strip composed of a flexible body ortion consisting of a plucork extended into said openings, substantially as described.

3. As an improved article of manufacture, a flexible composite'sheet or strip composed ofa body portion of fibrous material in Whole or in art and having openi s extended throng it, inserts of ,nonemeta lic material extended into said openings, and a backing "as described.

of flexible matei'ial secured to said body portion and covering said inserts, substantially 4. As an improved article of'manufacture,

a flexible composite sheet or strip composed of a flexible body ortion'consisting of a plurality of fibrous ayers connected together and having holes or openings, and inserts of cork extended into said openings, substantially as described. a

In testimony whereof I have signed my 

